So hearing the inverter pulse & seeing the current spike my fridge draws at start up got me thinking, and you know that feeling ;-)
The fridge says 430W 240VAC 0.7A on the label & it's only a 420L medium size one.
Can my inverter (Victron 5kVA Multiplus) handle it, yes - but I still don't like the startup peak.
This type of fridge has a single phase compressor with a "run" winding & a "start" winding.
Like many similar induction motors, the pulse of current flows when the start winding is given mains for a second or so to kick the motor off.
Here's the schematic:
The PTC starter is the bit to replace.
So I started looking & saw there were a few like dometic & emerson units but they looked like >$400, too much for me.
https://www.actrol.com.au/product/universal-compressor-soft-start-32amp-2711261
then found this for an OK price:
https://www.ebay.com.au/p/6871A20052A-LG-Aircon-Outdoor-Pcb-soft-Start-Control/1273939409 ~$90 AUD
It should work like the emerson unit.
It's a simple looking device with only a few terminals but can't find the connection diagram for it (searched the a/c unit models this fits) so I'm going to have to check out the circuit vs the emerson unit before I connect it.
Wish me luck!
The fridge says 430W 240VAC 0.7A on the label & it's only a 420L medium size one.
Can my inverter (Victron 5kVA Multiplus) handle it, yes - but I still don't like the startup peak.
This type of fridge has a single phase compressor with a "run" winding & a "start" winding.
Like many similar induction motors, the pulse of current flows when the start winding is given mains for a second or so to kick the motor off.
Here's the schematic:
The PTC starter is the bit to replace.
So I started looking & saw there were a few like dometic & emerson units but they looked like >$400, too much for me.
https://www.actrol.com.au/product/universal-compressor-soft-start-32amp-2711261
then found this for an OK price:
https://www.ebay.com.au/p/6871A20052A-LG-Aircon-Outdoor-Pcb-soft-Start-Control/1273939409 ~$90 AUD
It should work like the emerson unit.
It's a simple looking device with only a few terminals but can't find the connection diagram for it (searched the a/c unit models this fits) so I'm going to have to check out the circuit vs the emerson unit before I connect it.
Wish me luck!